Abstract: An electrospun nanofibrous layer may include an exemplary polymer scaffold made of at least one of nylon, polyester, polyvinyl alcohol, chitosan, and acrylic, an amine-terminated dendritic polymer that may be attached to and distributed within the exemplary polymer scaffold. An exemplary amine-terminated dendritic polymer may include at least one of polyamidoamine, polypropylene imine, and polyethylene imine. An electrospun nanofibrous layer may further include an exemplary volatile aromatic compound that may be encapsulated within the amine-terminated dendritic polymer.

Abstract: A microstrip antenna is disclosed. The microstrip antenna includes a dielectric substrate with a first relative permittivity, a metal patch, and a magneto-dielectric superstrate. The metal patch is printed on the dielectric substrate, and the magneto-dielectric superstrate is placed above the metal patch.

Abstract: A method for recovery of precious metals from copper anode slime may include leaching a leach liquor out of the copper anode slime by mixing the copper anode slime with a mixture of nitric acid and sulfuric acid, separating silver from the leach liquor by forming a silver chloride precipitate in the leach liquor by mixing a supersaturated sodium chloride solution with the leach liquor at room temperature and obtaining a first filtrate by filtering the silver chloride precipitate out of the leach liquor. Copper may be separated from the first filtrate by forming a copper hydroxide precipitate in the first filtrate by adjusting pH of the first filtrate at 9 and obtaining a second filtrate by filtering the copper hydroxide precipitate out of the first filtrate. Metallic selenium may be recovered from the second filtrate by reducing the metallic selenium via a chemical reduction utilizing L-ascorbic acid (LAA) as a reducing agent.

Abstract: A system for EMNZ metamaterial-based direct antenna modulation. The system includes a signal generator, a metamaterial switch and an antenna. The signal generator may is configured to generate a microwave signal. The metamaterial switch is configured to generate a modulated microwave signal from the microwave signal. The modulated microwave signal is generated by selectively passing the microwave signal through the metamaterial switch. The metamaterial switch includes a first conductive plate and a first loaded conductive plate. The first loaded conductive plate includes a second conductive plate and a first monolayer graphene. The first monolayer graphene includes a first tunable conductivity. The first monolayer graphene is positioned between the first conductive plate and the second conductive plate. An effective permittivity of the metamaterial switch is configured to be adjusted to a predetermined value.

Abstract: A method for determining sucrose concentration in honey. The method includes preparing a sample of honey, stimulating the sample by emitting a first laser beam on the sample in a first stimulation direction, detecting a fluorescence spectrum from a first fluorescence emission emitted from the sample in a first detection direction, detecting a first pair of fluorescence peaks and a second pair of peak wavelengths in the fluorescence spectrum, and determining a sucrose concentration based on one of the first pair and the second pair utilizing a database. The database includes a plurality of predetermined sucrose concentrations associated with the first pair or the second pair.

Abstract: A system for EMNZ metamaterial-based direct antenna modulation. The system includes a signal generator, a metamaterial switch and an antenna. The signal generator may is configured to generate a microwave signal. The metamaterial switch is configured to generate a modulated microwave signal from the microwave signal. The modulated microwave signal is generated by selectively passing the microwave signal through the metamaterial switch. The metamaterial switch includes a first conductive plate and a first loaded conductive plate. The first loaded conductive plate includes a second conductive plate and a first monolayer graphene. The first monolayer graphene includes a first tunable conductivity. The first monolayer graphene is positioned between the first conductive plate and the second conductive plate. An effective permittivity of the metamaterial switch is configured to be adjusted to a predetermined value.

Abstract: A metamaterial switch. The metamaterial switch includes a first conductive plate, a first loaded conductive plate, and a magneto-dielectric material. The first loaded conductive plate includes a second conductive plate and a first tunable impedance surface set. Each tunable impedance surface in the first tunable impedance surface set includes a respective tunable conductivity. An effective permittivity of the metamaterial switch is configured to be adjusted to a first predetermined value. The effective permittivity of the metamaterial switch is adjusted responsive to tuning a respective tunable conductivity of each respective tunable impedance surface in the first tunable impedance surface set.

Abstract: A method for preparing a wound dressing including forming a first solution by mixing a zinc solution with a Tragacanth solution, immersing a substrate in the first solution, forming a second solution by adjusting pH of the first solution containing the substrate, forming a modified substrate by synthesizing a plurality of ZnO nanoparticles with a particle size between 55 nm and 70 nm on the substrate by applying ultrasound radiation to the second solution, and forming a plurality of Ammoniacum nanocapsules with a particle size between 20 nm and 80 nm on the modified substrate.

Abstract: An epsilon-and-mu-near-zero (EMNZ) metamaterial. The EMNZ metamaterial includes a waveguide. A length l of the waveguide satisfies a length condition according to l?0.1?, where ? is an operating wavelength of the EMNZ metamaterial. The EMNZ metamaterial further includes a magneto-dielectric material deposited on a lower wall of the waveguide. The waveguide includes an impedance surface placed on the magneto-dielectric material.

Abstract: A class-E power oscillator (PO) is disclosed. The class-E PO includes a first inductor, a switch, a first capacitor, a resonant circuit, and a feedback network. The first inductor is coupled in series to a first power supply. The switch is connected between the first inductor and a primary common node. The first capacitor is connected between the first inductor and the primary common node. The resonant circuit includes a second inductor, a second capacitor, and a resistor. The second inductor is connected between the first inductor and the primary common node. The second capacitor is connected between the first inductor and the primary common node, and is coupled in series to the second inductor. The resistor is connected between the first inductor and the primary common node, and is coupled in series to the second inductor. The feedback network is connected between the switch and a feedback node. The feedback node is located between the second inductor and the second capacitor.

Abstract: A method for optical imaging based on spectral shift assessment. The method includes generating a sample by mixing an object with a fluorophore, stimulating the sample by emitting a laser beam, extracting a plurality of fluorescence spectra from a plurality of fluorescence emissions emitted from the sample, detecting a plurality of fluorescence peaks and a plurality of peak wavelengths in the plurality of fluorescence spectra, extracting a plurality of fluorophore concentrations from a database, and generating a concentration image. The plurality of peak wavelengths are detected by detecting a respective peak wavelength of the plurality of peak wavelengths. Each of the plurality of fluorophore concentrations is associated with a respective peak wavelength of the plurality of peak wavelengths. The concentration image includes a first plurality of pixels. The concentration image is generated based on a respective fluorophore concentration of the plurality of fluorophore concentrations.

Abstract: A double swirl burner including an annular air nozzle, an annular fuel nozzle coaxially disposed within the annular air nozzle, and a central air nozzle coaxially disposed within the annular fuel nozzle. An annular air nozzle may include at least one first inlet port on a peripheral wall of the annular air nozzle, where the first inlet port may be configured to allow for tangentially injecting a first air stream into the annular air nozzle. A first air stream may be tangent to a circular cross-section of the exemplary annular air nozzle, and a first axial inlet that may be configured to allow for axially injecting a second air stream into the annular air nozzle along a centerline of the annular air nozzle.

Abstract: A substrate integrated waveguide (SIW) slot antenna may include a substrate that may have a first substrate portion with a first permittivity less than and a second substrate portion with a second permittivity. The substrate may include a top surface and a bottom surface. The exemplary SIW slot antenna may further include a first conductive layer disposed on the top surface, a second conductive layer disposed on the bottom surface, a transverse slot on the first conducting layer, waveguide sidewalls that may include a plurality of spaced-apart metal-lined vias traversing the substrate, and a microstrip feed line on the first conducting layer.

Abstract: An improved system and method for detecting network anomalies comprises, in one implementation, a computer device and a network anomaly detector module executed by the computer device arranged to electronically sniff network traffic data in an aggregate level using a windowing approach. The windowing approach is configured to view the network traffic data through a plurality of time windows each of which represents a sequence of a feature including packet per second or flow per second. The network anomaly detector module is configured to execute a wavelet transform for capturing properties of the network traffic data, such as long-range dependence and self-similarity. The wavelet transform is a multiresolution transform, and can be configured to decompose and simplify statistics of the network traffic data into a simplified and fast algorithm.

Abstract: A microstrip antenna is disclosed. The microstrip antenna includes a dielectric substrate with a first relative permittivity, a metal patch, and a magneto-dielectric superstrate. The metal patch is printed on the dielectric substrate, and the magneto-dielectric superstrate is placed above the metal patch.

Abstract: A method for synthesizing mesoporous lithium manganese dioxide micro/nanostructures, in accord with an implementation, includes preparing an aqueous metal salt solution by dissolving a lithium ion source and a manganese ion source in water, and subjecting the aqueous metal salt solution to an anodic electrodeposition process. The anodic electrodeposition process may include transferring the aqueous metal salt solution to an electrodeposition bath comprising an anode electrode and a cathode electrode, such that the anode electrode and the cathode electrode are immersed in the transferred aqueous metal salt solution, and applying a pulse reverse current through the electrodeposition bath to obtain lithium manganese dioxide deposited on a surface of the anode electrode.

Abstract: A system for evaluating drainage condition of a pavement surface is disclosed. The system may include: a spray assembly configured to spray a liquid over the pavement surface, an image capturing device configured to capture consecutive images of the pavement surface at predetermined intervals, and an image processing unit coupled with the image capturing device.

Abstract: Disclosed herein is a system for simulating depletion/injection processes under true triaxial stress conditions. The system may include a pressure cell coupled with a true triaxial loading mechanism. A cubical rock specimen may be disposed within the pressure cell and vertical and horizontal loading mechanisms of the true triaxial loading mechanism may compress the cubical rock specimen along three principle axes, while pore pressure within the cubical rock specimen may be increased or decreased by injecting or discharging a pressurized fluid within the pressure cell in order to simulate in situ conditions of a real reservoir.

Abstract: A system for evaluating drainage condition of a pavement surface is disclosed. The system may include: a spray assembly configured to spray a liquid over the pavement surface, an image capturing device configured to capture consecutive images of the pavement surface at predetermined intervals, and an image processing unit coupled with the image capturing device.

Abstract: A method and apparatus for producing continuous web or sliver of milkweed fibers without the use of conventional carding machines is disclosed. The method generally includes feeding raw materials including milkweed fibers into the apparatus, transferring the milkweed fibers to a sliver collecting net, and producing the slivers on the surface of the sliver collecting net. The slivers can be separated from the sliver collecting net.